Re: [PATCH] ACPI: EC: Fix CPU frequency limitation on AMD platforms after suspend/resume

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On 4/28/2025 2:02 PM, Rafael J. Wysocki wrote:
On Mon, Apr 28, 2025 at 8:23 PM Mario Limonciello
<mario.limonciello@xxxxxxx> wrote:

On 4/28/2025 4:51 AM, Marcus Bergo wrote:
Yes, it does.


OK thanks for confirming.  Considering your finding with this patch
you've shared and knowing there is a timing dependency that delaying the
next s2idle cycle helps I do wonder if we should keep exploring.

Rafael, do you have thoughts here?  Specifically do you think it's worth
revisiting if b5539eb5ee70 was the correct move.

Well, it was done for a reason that is explained in its changelog.  I
think that the problem addressed by it is genuine, isn't it?

I mean yes - of course. My inquiry was whether this should be the default behavior or if it should have been a quirked behavior.

I don't have a good sense for the rest of the ecosystem what the impacts would really be at flipping it. Would it be worth adding a module parameter debug knob and survey what happens on a wide variety of machines?




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